Actually here's a thing. Our new car, a fairly humble model, nonetheless comes with projector headlights that have a sharp divide between "very bright" and "da

Actually here's a thing. Our new car, a fairly humble model, nonetheless comes with projector headlights that have a sharp divide between "very bright" and "dark" about halfway up to the rear windows of the car in front. That's if the car is perfectly level. But load it up for a Christmas trip, with the kids in the back seat and the trunk packed full, and it's ever so slightly off level, and over a distance low enough to still blind, will move that light/dark dividing line up to window level. And there's nothing we can do about it. The aim of the lights can't be adjusted. Unintended consequences. On the other hand, why do we have a new car? Because the old one got written off. Why? Because one of those gigantic SUVs whose hood is at about chest level, with way bright headlights was tailgating and blinding the spouse from behind so she pulled over to let it pass. Only to have the driver lose control (it was winter with some ice/snow on the road) and hit her on the rear corner. If it wasn't for those high-mounted, blinding lights none of this would have happened.